How To Fix RS_HCPR_MODEL124 - Field '&1' (&2) cannot be assigned to field '&3' (&4)

SAP Error Message - Details

• Message type: E = Error

• Message class: RS_HCPR_MODEL - Messages related to the HANA Composite Provider Backend

• Message number: 124

• Message text: Field '&1' (&2) cannot be assigned to field '&3' (&4)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RS_HCPR_MODEL124 - Field '&1' (&2) cannot be assigned to field '&3' (&4) ?

  The SAP error message RS_HCPR_MODEL124 indicates a data type mismatch or an assignment issue between two fields in a data model or transformation. This error typically occurs in the context of data extraction, transformation, or loading (ETL) processes, particularly when working with SAP BW (Business Warehouse) or SAP HANA.
  Cause:
  The error message is triggered when there is an attempt to assign a value from one field to another, but the data types or structures of the fields do not match. The placeholders in the error message represent:
  
  &1: The name of the source field.
  &2: The data type of the source field.
  &3: The name of the target field.
  &4: The data type of the target field.
  
  Common causes include:
  
  Mismatched data types (e.g., trying to assign a character field to a numeric field).
  Different lengths or structures of the fields.
  Incorrect mapping in transformations or data flows.
  
  Solution:
  To resolve the RS_HCPR_MODEL124 error, you can take the following steps:
  
  
  Check Data Types: Verify the data types of both the source and target fields. Ensure that they are compatible. For example, if the source field is a character type, the target field should also be a character type.
  
  
  Adjust Field Mapping: If you are using a transformation or data flow, check the mapping between the fields. Make sure that the source field is correctly mapped to a compatible target field.
  
  
  Modify Data Types: If necessary, you may need to change the data type of one of the fields to ensure compatibility. This can be done in the data model or transformation settings.
  
  
  Use Conversion Functions: If the data types are inherently different but you need to perform the assignment, consider using conversion functions (e.g., CONVERT_TO_STRING, CONVERT_TO_NUMERIC) to explicitly convert the data type of the source field before assignment.
  
  
  Check Field Lengths: Ensure that the lengths of the fields are appropriate. For example, if the source field is longer than the target field, you may need to truncate the source field or increase the length of the target field.
  
  
  Review Documentation: Consult SAP documentation or help resources for specific details about the fields and their expected data types.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Testing: After making changes, test the data flow or transformation to ensure that the error is resolved and that data is being processed correctly.
  
  By following these steps, you should be able to identify the root cause of the RS_HCPR_MODEL124 error and implement a suitable solution.